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Periodic Table of Elements
Explore questions in the Periodic Table of Elements category that you can ask Spark.E!
- Who discovered that the center of the atom was very small and dense with an overall positive charge in his gold foil experiment?
- Who said that atoms were indivisible, fundamental units of matter
- The subatomic particle with a positive charge
- An atom that gains an electron will have a ___ charge
- What are atoms that have the same atomic number but different mass numbers
- Is it easier to form a positive ion with an element that has a high ionization energy or an element that has a low ionization energy? explain.
- Circle the atom in each pair that has the greatest electronegativity:a) Ca Ga b) Li O c) Cl Sd) Br As e) Ba Sr f) O S
- What trend in electron affinity do you see as you go down a group/family on the periodic table? What causes this trend?
- What trend in atomic radius do you see as you go across a period/row on the periodic table? What causes this trend?
- Identify each element as a metal, metalloid, or nonmetal.a) fluorineb) germaniumc) zincd) phosphoruse) lithium
- Circle the atom in each pair that has the largest atomic radius:a) Al B b) S O c) Br Cld) Na Al e) O F f) Mg Ca
- What trend in electronegativity do you see as you go down a group/family on the periodic table? What causes this trend?
- Circle the atoms in each pair that has the greater ionization energy:a) Li Be b) Na K c) Cl Sid) Ca Ba e) P Ar f) Li K
- What trend in ionization energy do you see as you go down a group/family on the periodic table? What causes this trend?
- What trend in atomic radium do you see as you go down a group/family on the periodic table? What causes this trend?
- What is the total number of valence electrons in an atom of boron?
- All elements in group 16 have the same number of what?
- What is the total number of valence electrons in an atom of xenon?
- Why do elements in the same family (group) generally have similar properties?
- Which element has the lowest electronegativity out of P, S, Cl ,F?